Machine for making box-splints, veneers, shingles, &amp;c.



S. CARLIN.

MACHINE FOR MAKING BOX SFLINTS, VENEERS, SHINGLES, &c. APPLICATION FILEDDEC. 4. I916- Patented May 15, 1917.

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S. CARLIN.

'MAGHINE FOR MAK|NG BOX SPLINTS, VENEERS, SHINGLES, 8w. APPLICATIDNFILED 0:014. 1916.

.1,226,1 8 5. Patented May 15, 1917.

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APPLICATION FILED DEC-4. 19l 6.

Patented May 15, 1917.

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SAMUEL CARDIN, OF SPOKANE, WASHINGTON, ASSIGNOR 0F ONE-HALF TO ERNESTMORIN, OF SPOKANE, WASHINGTON. v

MACHINE FOR MAKING IBOX-SPLINTS, VENEERQ -SHINGLES, 8w.

Specification of Letters Patent.

Patented May 15, 1917.

Applicatioii filed December 4, 1916. Serial No. 134,921.

To uZZ whom it may concern:

Be it known that I, SAMUEL CARLIN, a citizen of the United States,residing at Spokane, in the county of Spokane and State of Washington,have invented new and. useful Improvements in Machines for MakingB0X-Splints, Veneers, Shingles, &c., of which the following is aspecification.

This invention relates to improvements in machines for making boXsplints, veneers, shingles, etc., under the well known method ofsteaming the wood blocks from which these articles are formed so thatthe veneer, splint or the like can be sliced off from the stock by areciprocating knife.

These reciprocating knives, which are usually mounted in or upon a'knifeframe, are operated at a fairly high speed and where dependence isplaced upon hand or manual feed of the stock, it is important to avoidunnecessary movement of the stock as otherwise the speed of the machinewould be limited to the speed of the feeder.

Therefore it is a primary object of my invention to provide a slicingmachine of this character wherein. a stock or wood block may heconstantly moved toward the knife without necessitating retractiontherefrom.

In n'mking box sides. tops, bottoms, etc, it is necessary, especially inapple boxes, to have the parts produced in accordance with the legallength requirements.

It is one of the objects of my invention to provide a machine which willnot only slice off a bOX splint, but which will in addition thereto.score or groove the stock so that when the box splint is sliced off itwill not only be of the required thickness, but also. of the requiredlength, the entire product being formed b one downward or working strokeof the knife frame. Therefore my invention involves grooving devices,and a special feature of novelty consists in providinr; knives forgrooving the stock which. are movahly mounted so that upon the returnstroke, they. will recede or retract,upon ei'lgan'ement with the stock,so that the scoring knives can pass upwardly or along the stock into astarting position. After the knives are in a starting position, they areactuated into a working position so that upon a next down stroke of theknife frame they will groove the block, this retraction the gage meanstaking the form of gage bars which are each independently adjustable notonly with respect to each other,

but as regards their relative plane to the slicing knife. Bv means ofthis independent adjustment, I am able to employ one of these bars as afulcrum bar, when making shingles, the other or remaining bars beingabutment bars, thereby permitting the feeder to alternately shift thestock in forming the butt ends of the shingles alternately, end to end,with respect to the stocle My invention also has to do with a novel formof feed table together with an im proved finger guard, and also otherfeatures and objects which will he more fully described in connectionwith the accompanying drawings and which will he more particularlypointed out in and by the appended claims.

In the drawings Figure 1 is a view in front elevation looking from thetable side of the machine and showing the knife frame in an upperposition.

Fig. 2 is a central vertical sectional view on line 2-2 of Fig. 1.

Fig. 3 is a rear view looking in a direction opposite to the directionfrom which the machine is viewed in Fig. 1.

Fig. 4 is a horizontal sectional view on line of Fig. 3. a

Fig. 5 is an enlarged fragmentary sectional, view showingthe mainslicing knife in section and one of the grooving knife devices andillustrating the relation thereof to the stock on the table.

Fig. 6 is a sectional view on line 6-6 of Fig. 5, with the knife and theknife bar in elevation.

Fig. 7 is a view in elevation of one of the scoring knives removed fromits mounting.

Fig. 8 is a sectional yiew on line 88 of Fig. 6.

Fig. 9 is a plan view illustrating the disposition of the gage rods anda block of wood when making shingles.

Fig, 10 is a similar view-illustrating the disposition of the gage rodswhen making box splints or veneers.

Like characters of reference designate similar parts throughout thedifferent figures of the drawings.

In the accompanying drawings, I have shown one form of my inventionwhich includes a frame comprising uprights 1, and a top beam 2, whichlatter connects the uprights 1 to form a rigid frame structure. Theuprights 1 are reduced to form table supporting shoulders 3, forsupporting a table of novel construction which I will subsequentlydescribe.

Secured to the inner faces of the frame members 1 is a plurality ofguides 4, 5 and 6 which serve to hold a knife frame to a linear path ofreciprocating movement. A suitable power shaft, not shown, will beprovided for connection with a connectingrod 7 to impart reciprocatingmovement to the knife frame, which I will now describe in detail.

The knife frame comprises vertical members S which are shown connectedat their lower ends by a cross bar 9, to which the connecting rod 7 issuitably united. Between the ends of said members I provide cross bars10 and 11 which are rigidly connected to said vertical members 8.l/Nhile the function of these cross bars 10 and 11 is not solely tostrengthen and connect the members 8, this is one function which thesecross bars 10 and 11 incidentally perform. At

or near the upper ends of said members 8,

the main slicing knife 12, is mounted, and this slicing knife mayconstitute a strengthening member for the upper endsof said verticalmembers 8. Said members 8 fit in and are adapted to reciprocate, as awhole, in the guides 4 5 and 6, mounted upon the uprights 1, under theaction imparted thereto by the connecting rod 7.

I will next describe an improved gage means for limiting movementof thestock toward or under the slicing knife .12 in or- .der to provide forcutting or slicing splints, veneers or shingles of a predeterminedthickness.

As illustrated, my improved gage means is mounted upon the knife frame,and more specifically speaking, upon the cross bars 10 and 11, which Iwill hereinafter term gage supports. My improved gage means comprises,in the form .shown, threegage rods or bars which I will designate as 13,141, and 15. These bars, as shown more particularly in Figs. 1, 2 and 3,are vertically disposed and they entend from a point just below the mainslicing knife, when the latteris in a normal or upper position, belowthe feed table 3, thereby always presentmg a gage surface against whichthe stock may be advanced into range of the cutting knife. A feature ofmy improved gage means consists in providing independent adjustingdevices for each gage bar whereby said bars may be independentlyadjusted at remote points along their length not only to square up saidbars with respect to the plane of reciprocating travel of the slicingknife, but also for the purpose of bodily adjusting said gage rods orbars with respect to each other, either for making boX splints or sidesor for making shingles, which will be presently described.

As illustrated, each gage rod or bar is ad- 0 justably connected witheach gage supporting bar. Inasmuch as the adjustable connections are allidentical in operation and structure, only the adjustable connectionsfor one bar need be described in detail. Re-

ferring to bar -3, the same is provided with upper and lower threadedgage bolts 16 and 17, brazed or otherwise rigidly secured to said bar 13and having exterior threads thereon. The gage supports 10 and 11 are thesupport 10, for the purpose of adjusting 9 rod 13 at remote points alongits length, bodily, or end to end so as to true up the gage rod 13 intoparallel relation with the slicing. knife 12. Thus it will. be seen thatadjustment of'the nuts not only serves to true up. the gage rod but alsoto rigidly secure the gage rod in an adjusted position. Rod 14 isprovided with means rigidly se cured to adjusting bolts 22 and 23, withits pro-per complement of adjusting nuts, and .3

rod 15 is provided with bolts 2-1 and 25, rigidly secured thereto,together with its proper complement of adjusting nuts.

In practice, the stock or block indicated at 26, in dotted lines, willbe constantly 1 o thrust against the gage bars to dispose predeterminedmarginal portions under or in slicing range of the knife 12. It will beseen that as the knife 12 travels downwardly,

on its cutting stroke, that the gage bars will act as gageiabutinents tothe stock during and until the slicing knife has practically sliced offthe desired product, there being only a slight distance between the topof the gage bars and the cutting edge of the slic 12o ing knife.

In slicing off a product which is intended to be of uniform thickness,such as a veneer or box side, I find it necessary to only use gage rods14 and 15, or in other words, the

outermost rods. For this class of work I therefore adjust the centralrod 13 rear wardly, bodily, so that it will be out of range of the stock26, as diagrammatically indicated in Fig. 10. I make this adjustmcntbecause it is only necessary to maintain the stock 26 in a planeparallel with the plane of reciprocation of the slicing knife and I findtwo gage rods can perform this function perfectly.

In making shingles, 1 advance the gage rod 13, which is the central rod,somewhat beyond the outer rods 14, and 1.5, in a direction toward theknife, so that the central gage rod 13 can act as a fulcrum gage rod.Thus the stock will he thrust against rods 13, and 15 for one cut of theknife, (Fig. 9) to form the shingle butt 2? at the right end of block26. Upon. the next reciprocation of the knife, block 26 will be shiftedabout gage bar 13 as a fulcrum into abutting relation with gage bar 14and out of engagement with gage bar 15. This will form the butt end ofthe shingle opposite to the butt end indicated at 27. l.hroughout theslicing operation, the block will be alternately shifted in the mannerdescribed.

I will next describe a novel feature of my invention which enables menot only to slice off a box splint or veneer of a uniform thickness, in.one reciprocation of the slicing knife, but which also enables me toscore the stock at opposite ends so that when the box splint or side hasbeen sliced off, it will not only be of the required thickness, but alsoof the required length, the actual novelty of this feature being claimedas regards not only the scoring devices, separately, but also scoringdevices in combination with the slicing knife, and of such a characterthat they will be retracted on the return'stroke by engagement with thestock in such a manner that it will not be necessary to retract thestock at each upward or return. stroke of the knife frame in order topermit the scoring knives to pass the stock.

In describing my improved scoring devices I will refer more particularlyto Figs. 5, 6, 7 and 8. Each scoring device includes a mounting block orbar 28, which is recessed at 29, so as to fit about three sides of gagesupport bar 11. An attaching plate 80, secured by screws 31, serves torigidly anchor the mounting block 28 upon the gage support 11. The upperend of the block 28 is provided with an opening of such transversedimensions that its lateral walls 32 and will structurely engage ascoring knife, and a score knife supporting bar so as to hold the samein lateral abutting relation, as will. presontl 1 appear. A. scoringknife supporting bar 34 extends into the opening in the block 28 andprojects rcarwardly therefrom away from the slicing knife 12.. Thescoring knife supporting bar 34 is mounted in the block 28 by a pivotstud 35. A scoring knife is shown having a shank portion 36 providedwith a counter-sunk slot 37 therein. The cutting or scoring portion ofthe knife is indicated at 38 and the same is provided with a point edge39 having a canrshaped stock engaging portion 40. As will be seen moreparticu larly by reference to Fig. 5, this cam portion 40 is adapted toengage the stock 26 so as to retract or tilt the scoring knife in themanner indicated in dotted lines, so that the scoring knife will be ableto pass by the stock 26 on the return stroke of the knife frame therebyeliminating the operation of retracting the stock to permit of returnstroke of the knife frame. By means of this construction, the stock maybe constantly urged toward the gage instead of being reciprocated backout of the way of the knife frame.

I will next describe the manner in which the scoring knife is held toits work under scoring stress so as to take the strain off from theknife retaining or supporting bar 34 and the pivot 35.

As will be seen more particularly by reference to Fig. 8, the block 28is provided with abutments 41 and 42 on the lower and upper walls of theopening which extends through the block 28. These abutments 41 and 42extend in opposite directions of a vertical line intersecting the ofpivot stud 35. The remaining portions of the upper and lower walls ofthe said opening in block 28, are recessed as indicated at 43 and 44, insuch a manner as to permit the knife and the supporting bar 34 to tiltfrom the position shown in full lines, in Fig. 5, to the position shownin dotted lines in Fig. However, the important feature is that abutments41 and 42 structurely engage the knife to hold the same in a scoringposition under working stress on the downward stroke of the knife frame,and off from the pivot As a means of positively securing the scoringknife to its bar, I provide a countersunk bolt 45 which extends throughthe slot 37 and through a slot 46, in the bar 34, there being a nut 47to tighten the bore rigidly and clamp the scoring knife to its retainingbar. The slots 37 and 46 permit of adjust ment of the knife point 29 soas to score the stock 26 to the required depth. Because of the highspeed with which this machine will operate, I consider it important toinsure the return of the knife point 39 into a. proper scoring positionimmediately upon passage of the knife points upwardly or beyond thestock 26. Therefore, I provide means which may be in the form of aspring 48, attached. to bar 34', at 49, and to block 28 at 50, thespring normally urging the bar 34 and the scoring knife into theposition shown in full lines of Fig. 5, with the knife in, engagementwith the abutments 41 and 42. It will be seen by reference to Fig. 5that the scoring knives are somewhat in advance of the cutting edge ofthe slicing knife 12, and therefore the scoring knives will score thestock 24 slightly in advance of the slicing knife, this feature insuringa sliced off splint or shlngle of integral formation and greatlydecreasing the danger of splitting the prodwith respect to the scoringand slicing knives.

By reason of-the fact that the stock is not only sliced off but grooved,so as to produce an article of the legal or required length, I am ableto sub-divide the stock in lengths which are only slightly in excess ofthe length of the product to be formed. This reduces waste. The lengthof the stock 26, as shown in Fig.1, is considerably exaggerated withrespect to the length which will absolutely be necessary. However, thescoring knives are adjustable lengthwise of gage supporting bar 11 andtherefore in some instances the stock may be of the length shown indotted lines, for an outer adjustment of the scoring knives.

I will next describe a novel protecting feature for protecting the handsof the operator from injury.

Guards 51, which may be formed of open mesh wire netting, are mountedupon the knife frame and are preferably secured to the lateral verticalmembers 8 and to gage rods 14 and'15. These guards extend downwardlyfrom above the scoring knives sufficiently so that they will be belowthe top of the table when the knife frame is in a starting or upperposition, as more particularly shown in Fig. 3. By reference to Fig. 4-,it will be seen that the guards are slightly behind the scoring andslicing knives, from the table, or from the stock, but only slightly so.Now when the stock has been sliced off until it is reduced in size, thenthere is danger of the operator getting his finger ends beneath theknife and getting them cut off. This screen guard affords protectionagainst projection of the fingers beneath the knife 12, when the stockbecomes reduced. It might be possible, because of the location of thescreen guard somewhat rearwardly from the knives, to chip or scratch thefinger of the operator if the finger was projected too far, but thepresence of these guards would prevent amputation. A more impor tantfeature however, is that if the finger of the operator were initiallyprojected too far,

- then downward movement of the guard would strike the finger and thiswould cause the operator to involuntarily retract his finger prior toinjury. This is one of the reasons why I use a rough guard which theforaminated material presents.

I will next describe my improved table for supporting the stock.

My improved table includes a base portion 52 which is preferably rigidlymounted on the shoulders 3, indicated in Figs. 1 and 2. Adjustable onthis table base 52 is a surface table portion 53 which is preferablyformed of wood. The surface portion 53 is not equal in length to thebase portion 52 but is sufficiently short to be adjusted be, tween theuprights 1, as indicated in Fig. 1. Near the ends of the surface portionI recess the top of the same and dispose wearing plates 54 therein. Thewearing plates 54 are provided with slots 55 and the surface portion 53is complementally slotted to provide for projection therethrough ofadjusting bolts 56. Adjusting bolts 56 extend downwardly through thebase portion 52 and the latter is recessed at 57 to accommodate the boltheads 58 and prevent the bolts from turning. Nuts 59 are adapted to beturned onto the threaded ends of the bolts 56 to clamp the surfaceportion 53 in the desired position of adjustment with respect to theslicing plane of operation of the knife 12.

A feeding table of this character has its greatest wearing surfaceadjacent the knife which reciprocates along the side thereof. It is notfeasible to provide a hardened steel table because this would injure theknife in case the knife struck the table. Further more, a wood surfacetable wears down very quickly and therefore I have conceived the idea ofproviding a wood surface with a grid of soft metal such as babbitt, thebabbitt taking the wear and protecting the table and also affording asoft surface which will yield'and prevent injury to the knife.

As illustrated, the surface portion 53 is longitudinally andtransversely grooved, the longitudinal grooves being indicated at 60,61, 62, 63 and 64L, in Fig. 2. The transverse grooves are clearlyindicated in Fig. 4, as of the shape of the grid of babbitt, the babbittportions being designated by reference numerals. A bar of babbitt 65lies adjacentthe sweep or plane of reciprocation of the knife 12 andpresents a surface which will yield and be cut by the knife withoutinjuring the knife. 66 and 66 indicate the end bars of babbitt which areconnected by a bar 67 on the outside margin of the surface portion 53.Longitudinal bars of babbitt 68, 69 and 70 extend between the bars 65and 67 and in the grooves 61, 62 and 63. Transverse bars 71 connect bars68, 69. and 70 and also the front and rear bars 65 and 67. Thus it willbe seen that I groove a grid work of grooves in the surface portion 53and I provide a complemental grid work of babbitt to fit in said groovesand form a flush feeding surface.

The soft metal serves to take the wear and protect the Wood top, and thelatter sup ports the babbitt so that it is not necessary to use as muchmetal as would be necessary if the entire top were formed of metal.Furthermore, by means of these grooves, the

metallic grid work is rigidly held in position.

My invention also includes an improved slicing knife which I will nowdescribe in detail.

The slicing knife 12 is provided with a cutting edge having a straight,and preferably centrally disposed advance entering portion 72, andlaterally extending receding cutting portions 73. When the knife entersthe stock, this straight advance cutting edge or entrance edge.72 has asomewhat extended engagement with the stock as compared to a pointededge convergence, and therefore, this straight advance edge enteringportion steadies the knife so as not only to prevent the same fromspringing or cutting out of line, but also, preventing the knife fromsplitting the wood that is sliced off. In other words entrance of theknife into the stock, initially, is throughout such a considerablelength that the receding portions 73 enter more quickly than would bethe case if the receding portions converged to a point. Furthermore, apointed convergence always dulls quickly and requires frequentsharpening whereas if this initial cutting strain is disposed along astraight advance edge cutting portion the stock will not dull thiscutting edge nearly so quickly.

My improved slicing knife also has a novelty feature, which comprises aconcave stock face or surface 74 which extends horizontally a distanceequal to the length of the cutting edge and which also extendsVertically from the cutting edges 72 and 73 upwardly to the butt 76. Byreason of this construction, it is not necessary for me to cant theslicing knife from the vertical in order to make it enter the stock andslice ofi the product. My improved knife, because of this construction,is vertically disposed and reciprocates in a vertical plane. In otherwords, it reciprocates in a plane at right angles to the plane ofsupport of the stock. By having the slicing knife vertically disposed,it is very much easier to true up the gage means and also the knife,with respect to the supporting table, and it is also easier to true upthe gage means with respect to the knife.

The concave portion 74:, starting at the cutting edge, causes thecutting edge to wear sharp instead of round, and in sharpening thecutting edge, I can lay the stone on the stock side or face of the knifewith the stone bearing at 76 and on the cutting edge, and I will alwaysbe sure to sharpen the cutting edge itself" instead of wearing the stoneout against the side of the knife.

In practice, I employ a bevel 77 of about one sixteenth of an inch, theknife being thickened at 7 8, gradually to the required thickness.

while I have herein shown and described one specific form of myinvention, I do not wish to be limited thereto except for suchlimitations as the claims may import.

I claim 1. In a splint, veneer or shingle forming machine, a table forsupporting the stock to be sliced, a main reciprocating knife forslicing off from the stock a splint of the desired thickness, and knivesmoving with said main knife for scoring the stock to form a splint cutby said main knife of the desired length during the slicing stroke ofsaid main knife, said scoring knives being movably mounted forretraction on the return stroke on engagement of said scoring kniveswith the stock, whereby feed pressure may be constantly applied toadvance the stock toward said main knife, substantially as described.

2. In a splint, veneer or shingle forming machine, a table for the stockto be sliced, a main reciprocating knife for slicing off from the stocka splint of the desired thick ness, and knives for scoring the stock toform a splint cut by said main knife of the desired length during theslicing stroke of said main knife, said scoring knives being pivotallymounted to permit of retraction of said scoring knives on engagementwith the stock on the return stroke, whereby feeding pressure may beconstantly applied to advance the stock toward said main knife,substantially as described.

3. In a splint, veneer or shingle forming machine, a table forsupporting the stock to be sliced, a main reciprocating knife forslicing off from the stock a splint of the desired thickness and knivesfor scoring the stock to form a splint out by said main knife of thedesired length during the slicing stroke of said main knife, eachscoring knife having mounting means pivotally supporting its knife andbeing provided with an abutment for holding the knife to its work underscoring action and also having a recess to permit of retraction of saidknife on engagement of the knife with the stock during the returnstroke, whereby feeding pressure may be constantly applied to advancethe stock toward said main knife, substantially as described.

4. In a splint, veneer or shingle forming machine, a table forsupporting the stock to be sliced, a main reciprocating knife .forslicing off from the stock a splint of the desired thickness, knives forscoring the stock to form a splint cut by said main knife of the desiredlength during the slicing stroke of said main knife, each scoring knifehaving a holderpivotally supporting its knife and being provided with anabutment for holding its knife against pivotal movement under scoringaction and provided with a recess to permit of retraction of its knifeon engagement with the stock during the return stroke, and a spring foreach holder normally acting to return the knife into engagement with itsabutment,

substantially as described.

5. In a splint, veneer or shingle making machine, a table for supportingthe stock, a reciprocating knife frame, a stock scoring device mountedon said frame and including a mounting block having an openingtherethrough provided with a knife abutment and a knife releasingrecess, a knife bar extending into saidopenin'g and being pivoted tosaid block, a scoring knife extending through said opening and adaptedfor rocking movement into and out of contact with said abutment andextending along side of said knife bar, means securing said knife tosaid knife bar, and means engaging said knife bar to normally retractsaid knife against said abutment, substantially as described.

6. In a scoring knife device, a mounting block having an openingtherethrough with a knife abutment and a knife releasing recess, a knifebar pivoted to said block and extending into said opening, a scoringknife fixed to said bar and extending through said opening and adaptedfor rocking move ment into and out of contact with said abutment,substantially as described.

7. In a splint, veneer or shingle making machine, a table for the stock,a vertically,

reciprocating knife frame provided with a knife for slicing the stock, ascoring device mounted on said frame and including a mounting block.provided with an abutment, a knife bar pivoted to saidblock, a scoringknife secured to said knife bar and adapted for co-action with saidabutment to hold said scoring knife to its Work during scoringreciprocation of the frame, and means normally acting to hold said knifein engagement with said abutment, substantially as described.

8. In a wood scoring device of the class described, a mounting blockprovided with knife abutment, a knife bar pivoted to said block, ascoring knife secured to said knife bar and adapted for engagement withsaid abutment to thereby hold said knife to its work during scoringreciprocation, and means normally holding said knife bar in engagementwith said abutment, substantially as described.

9. In a wood scoring device, a supporting.

block, a scoring knife, a knife supporting bar, an opening in saidsupporting block having lateral walls spaced. to hold said knife and barin close lateral relation, said knife and supporting bar being pivotallymounted centrally in said block opening,

said scoring knife extending through said opening and being rigidlysecured to said bar, the upper and lower walls of said opening havingfiat abutment portions on opposite sides of a line intersecting the axisof said pivot of said bar for holding said knife against rockingmovement when said knife is under scoring stress, said upper and lowerwalls having receding portions contiguous with and extending in oppositedirections from said abutment portions whereby said knife may rock froma scoringposition on return stroke of said knife, substantially asdescribed;

10. In a wood splint, veneer or shingle making machine, a table forsupporting the stock, a reciprocating knife frame, a supporting blockmounted on said knife frame, a scoring knife, a knife supporting bar,said block having an opening provided with lateral walls spaced to holdsaid knife and bar in close lateral relation, said knife supporting barbeing pivotally mounted centrally in said opening, said scoring knifeextending through said opening and being rigidly secured to said bar,the upper and lower walls of said opening having flat abutment portionson opposite sides of a line intersecting the axis of said pivot forholding said knife against rocking movement under scoring stress, saidupper and lower walls having receding portions extending in oppositedirections-from said abutting portions for permitting rocking movementof said knife on the return stroke of said frame, substantially asdescribed.

11. In combination, a reciprocating knife frame provided with a slicingknife, a table for the stock havin a fixed base portion, a wood surfaceportion adjustably mounted on said base'portion for movement toward orfrom said knife, the top of said surface portion having a grid-Work ofgrooves formed therein, and a grid of Babbitt or like soft metal fittingin said grooves and being flush with the top of said surface portion,substantially as described.

12. In a wood slicing machine, a table for the stock, a reciprocatingknife frame movable past said table, and a knife carried by said frameand having a stock side concave from its cutting edge toward its base,substantially as described.

13. In a wood slicing machine, a table for the stock, a reciprocatingknife frame movable past said table, and a knife on said frame having acutting edge provided with a straight advance entering portion disposedcentrally of the length of said cutting edge, the remaining portions ofthelength of said cutting edge being inclined rearwardly from saidadvanced portion, substantially as described.

14. In a wood slicing machine, a table for supporting the stock, aslicing knife llflVlIlg a cutting edge and being concave on its stockside from its cutting edge toward its butt, whereby the knife may bereciprocated at a plane at right angles to the surface of the table,substantially as described.

15. In a scoring knife device, a reciprocating mounting block, a scoringknife, means pivotally mounting said knife on said block in a mannerpermitting movement of said knife out of the path of the Work on thereturn stroke of said block, and said block having an abutment forholding said knife to its Work on the scoring stroke of said block,substantially as described.

In testimony that I claim the foregoing as my own, I hereby afiix mysignature.

SAMUEL OARLIN.

Games of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. a

